It could be a 3rd party security software issue. or troubleshooting, try to
start the Vista with clean boot.

Windows generalHow to run Windows OS with a clean boot · How to Run Windows
Safe Mode with Networking · How to setup DHCP for IP Phone How to sort
programs in Start ...
http://www.howtonetworking.com/Windo...owsgeneral.htm


--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
"cham" <chandrahas2010@gmail.com> wrote in message
news:efba4c62-f806-4b00-89e7-fffb3a6733e6@x19g2000prg.googlegroups.com...
>I am using 2 laptops 1 installed Vista OS & 2 installed XP loaded.now
> problem comes in Vista loaded laptop.my pcmcia data card not connect
> after athentication username & password, "Remote Computer Could Not
> Respond" this massege comes.if i use another net service provider dail
> up connection still same error message appears on screen but another
> XP Loaded laptop both connections works fine.
>